ourhdr.h

unix环境高级编程的ourhdr.h和出错处理函数头文件

/* Our own header, to be included *after* all standard system headers */
 
#ifndef __ourhdr_h
#define __ourhdr_h
 
#include <sys/types.h> /* required for some of our prototypes */
#include <stdio.h>     /* for convenience */
#include <stdlib.h>    /* for convenience */
#include <string.h>    /* for convenience */
#include <unistd.h>    /* for convenience */
 
#define MAXLINE 4096  /* max line length */
 
#define FILE_MODE (S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH)
/* default file access permissions for new files */
 
#define DIR_MODE (FILE_MODE | S_IXUSR | S_IXGRP | S_IXOTH)
/* default permissions for new directories */
 
typedef void Sigfunc(int);    /* for signal handlers */
/* 4.3BSD Reno <signal.h> doesn't define SIG_ERR */
 
#if defined(SIG_IGN) && !defined(SIG_ERR)
#define SIG_ERR ((Sigfunc *) -1)
#endif
 
#define min(a,b) ((a) < (b) ? (a) : (b))
#define max(a,b) ((a) > (b) ? (a) : (b))
 
/* prototypes for our own functions */
char *path_alloc(int *);    /* Program 2.2 */
int open_max(void);         /* Program 2.3 */
void clr_fl(int, int);      /* Program 3.5 */
void set_fl(int, int);      /* Program 3.5 */
void pr_exit(int);          /* Program 8.3 */
void pr_mask(const char *); /* Program 10.10 */
Sigfunc *signal_intr(int, Sigfunc *); /* Program 10.13 */
 
int tty_cbreak(int);        /* Program 11.10 */
int tty_raw(int);           /* Program 11.10 */
int tty_reset(int);         /* Program 11.10 */
int tty_atexit(int);        /* program 11.10 */
#ifdef ECHO                     /* only if <termios.h> has been included */
struct termios *tty_termios(void); /* Program 11.10 */
#endif
 
void sleep_us(unsigned int);    /* Exercise 12.6 */
ssize_t readn(int, void *, size_t); /* Program 12.13 */
ssize_t writen(int, const void *, size_t); /* Program 12.12 */
int daemon_init(void);          /* Programs 13.1 */
int s_pipe(int *);              /* Programs 15.2  and 15.3 */
int recv_fd(int, ssize_t (*func) (int, const void *, size_t));
/* Program 15.6 and 15.8 */
int send_fd(int, int);          /* Programs 15.5 and 15.7 */
int send_err(int, int, const char *); /* Programs 15.20 */
int serv_listen(const char *); /* Programs 15.19 and 15.22 */
int serv_accept(int, uid_t *);  /* Programs 15.20 and 15.24 */
int cli_conn(const char *);     /* Programs 15.21 and 15.23 */
int buf_args(char *, int (*func)(int,char **)); /* Program 15.17 */
 
int ptym_open(char *);          /* Programs 19.1 and 19.2 */
int ptys_open(int, char *);     /* Programs 19.1 ans 19.2 */
#ifdef TIOCGWINSZ
pid_z pty_fork(int *, char *, const struct termios *, const struct winsize *);
/* Program 19.3 */
#endif
 
int lock_fork(int, int, int, off_t, int, off_t); /* Programs 12.2 */
#define read_lock(fd, offset, whence, len) \
lock_reg(fd, F_SETLK, F_RDLCK, offset, whence, len)
#define readw_lock(fd, offset, whence, len) \
lock_reg(fd, F_SETLKW, F_RDLCK, offset, whence, len)
#define write_lock(fd, offset, whence, len) \
lock_reg(fd, F_SETLK, F_WRLCK, offset, whence, len)
#define writew_lock(fd, offset, whence, len) \
lock_reg(fd, F_SETLKW, F_WRLCK, offset, whence, len)
#define un_lock(fd, offset, whence, len) \
lock_reg(fd, F_SETLK, F_UNLCK, offset, whence, len)
 
pid_t lock_test(int, int, off_t, int, off_t); /* Program 12.3 */
 
#define is_readlock(fd, offset, whence, len) \
lock_test(fd, F_RDLCK, offset, whence, len)
#define is_writelock(fd, offset, whence, len) \
lock_test(fd, F_WRLCK, offset, whence, len)
 
void err_dump(const char *, ...); /* Appendix B */
void err_msg(const char *, ...);
void err_quit(const char *, ...);
void err_ret(const char *, ...);
void err_sys(const char *, ...);
 
void log_msg(const char *, ...); /* Appendix B */
void log_open(const char *, int, int);
void log_quit(const char *, ...);
void log_ret(const char *, ...);
void log_sys(const char *, ...);
 
void TELL_WAIT(void);           /* parent/child form Section 8.8 */
void TELL_PARENT(pid_t);
void TELL_CHILD(pid_t);
void WAIT_PARENT(void);
void WAIT_CHILD(void);
 
#endif /* __ourhdr_h */